19820003601 has 32 divisors (see below), whose sum is σ = 28344434688. Its totient is φ = 12287056320.

The previous prime is 19820003597. The next prime is 19820003641. The reversal of 19820003601 is 10630002891.

It is not a de Polignac number, because 19820003601 - 2² = 19820003597 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19820003641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4100256 + ... + 4105086.

It is an arithmetic number, because the mean of its divisors is an integer number (885763584).

Almost surely, 2^19820003601 is an apocalyptic number.

It is an amenable number.

19820003601 is a deficient number, since it is larger than the sum of its proper divisors (8524431087).

19820003601 is a wasteful number, since it uses less digits than its factorization.

19820003601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6501.

The product of its (nonzero) digits is 2592, while the sum is 30.

The spelling of 19820003601 in words is "nineteen billion, eight hundred twenty million, three thousand, six hundred one".